Regulating device.



. E. A. WAGNER.

REGULATING DEV IOE.

APPLICATION TILED APR.29, 1909.

1,010,990. Patented Dec.5,1911.

Witnesses: 6 Inventor:

. f W Edward DI. We; n r, I y ,M b

UNITED STATES PATENT orn cn.

EDWARD A. WAGNER, OF FORT WAYNE, INDIANA, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

REGULATING DEVICE.

Specification of Letters Patent.

Patented Dec. 5, 1911.

Application filed April 29, 1909. Serial No. 492,823.

To all whom it may concern:

Be it known that I, EDWARD A. WAGNER, a citizen of the United States, residing at Fort Wayne, county of Allen, State of Indiana, have invented certain new and useful Improvements in Regulating Devices, of which the following is a specification.

My invention relates to electrical regulat-- ing devices, and more especiall to those which are used for the regulation of arc lamps, and has for its object an improvement in such devices.

When are lamps are used for various purposes, such as for the illuminating agents for stereopticon or moving picture machines, it'is well known that they must be regulated with great care. With moving picture machin'es also, it frequently happens that it is necessary to operate the arc so as to give different intensities of illumination, as the opaquen'ess of the films used with such machines is not always the same. In the past it has often been customary to provide for such regulation by the use of resistances connected in series with the arc. Regulation by means of resistances is not satisfactory, as considerable energy is expended in heating the resistances, and this is not only a source of expense, but due to the heat developed may also be a source of danger. Reactive coils or transformers alone have been used, but the method of regulation when a transformer alone is used is not very satistory on account of the adjustment required for the different intensities of illumination mentioned above, since each adjustment must give, a suitable condition of reactance or regulation characteristic so as to maintain a suitably stable arc. Reactance coils alone also are not very satisfactory, as it is necessary in general to cut down the line voltage a considerable amount for operating the arc, as the voltage across the ordinary alternatin current open arc is ordinarily in the neigh orhood of 35 volts, whereas the voltage of the circuits from which such arcs are supplied is usually, about 120 or 220 volts. I accomplish the object of my invention, therefore, by providing a special form of compensator or transformer for transforming the line voltage to a voltage substantially suitable for the operation of the arc, and also by providing reactive coils in series with the are, which coils may be used for providing different intensities of illumination and for giving a suitable regulation characteristic to -maintain a stable arc; a switching device being also -provided.

The further novelties of my invention are pointed out with particularity in the claims annexed to this specification.

For a better understanding of my invention reference may be had to the accompanying drawings, where- Figure 1 shows a perspective view of a regulator built in accordance with my invention; Fig. 2 is a vertical view partially in section of the regulator; and Fig. 3 is a diagrammatic view of the circuits which I employ.

Referring first to Fig. 3, 1 and 2 are conductors connected to a suitable source of electrical energy. The regulator consists of a core 3, which is shown as having three legs. Around the central leg are two windings 5 and 6, one terminal of each winding being connected by conductors 1 and 2 to the source of energy. 4 is a magnetic shunt,

which, if desired, may be made adjustable, and is inserted between the legs of the core and between the windings 5 and 6, in order I to give a greater leakage of the magnetic flux between the windings and thus divert a portion of the magnetic flux set up by one winding from passing through the other.

Situated in the drawing above the core 3 p is shown a switching device which consists of a conducting member 7, to which is pivoted a conductlng blade 8. In operative relation with this conducting blade are contacts 9, 10 and 11, so arranged that the blade in its downward movement in the well known manner makes contact with these contacts. Windings 5 and ,6 on core 3 have their free terminals connected, respec-' tively, to contacts 7 and 9. A translating device 12, shown as an arc lamp, is connected by suitable conductors across wind ing 6 in series with two reactive coils 13 and 14. Conductors 1.") and 14 connect contacts 10 and 11 to the ends of these reactive coils in such a manner that the switch blade 8 in its d'esc nding movement will successively short-clrcuit these coils.

The operation of my device is as follows:-

When it is desired to operate the translating device 12 with its minimum energy consumption if the translating device be an arc lamp with its minimum lntensity of illumination, switch 8 is thrown in the position shown in the drawing. in this position the two free terminals of windings 5 and 6 are connected together and these windings form the high voltage winding ofthe compensator, being connected to the source of energy by conductors 1 and 2. The winding 6, which is connected to the translating device, fornis the low-voltage winding of the commutator. Reactive coils 13 and 14: are in series. with the translating device and, therefore, the minimum energy will be consumed by the device. If it is desired to increase the energy or the intensity of illumination of the arc the blade is moved farther down, so as to come in contact with contact member 10, in which case reactive coil 13 is short-circuited. If still further intensity of illumination is desired, the blade 8 may be brought farther down to its lower position in contact with member 11 in which position both reactive coils will be shortcircuited, and the maximum energy will be consumed by the translating device, or the arc will give its maximum illumination. The contact members are shown as arranged in sucha way that the blade in its downward movement first connects the compensator windings in series with the source, and then, by successive steps, short-circuits the reactive coils. Contact members 9 and 11 are shown as being of such a character that after the blade in its downward move ment has once made contact with these members it will remain in contact with them during its subsequent downward movement. Contact member 10, however, is shown, Fig. 1, as being so arranged that somewhat after blade 8 has made contact with member 11, it passes out of contact with member 10. It will be understood, however, thatthis does not affect the electrical connections, as will be obvious from an inspection of the drawings. It will also be obvious that while 'I have shown a regulator adapted for giving three different energy consumptions for the translating device, that by a suitable arrangement, in accordance with my invention, any number of steps desired may be used.

Referring to Fig. 2, core 3 is supported by a support 15, which is arranged with legs to stand upon the floor or ground. Supporting member 16 is shown attached to the uppper side of the core, members 15 and 16 being fastened together by a bolt 17 shown in Fig. 1. Fastened to support 16' is a t-op 19, which may be made of any material, but I prefer to make it of an insulating material such as slate, which member supports the switching device already described and terminals 20, which are used for connecting the source of energy to the windings 5 and 6 and terminals 21, which are used for connecting the translating device to winding 6. Reactive coils 13 and 1e are shown as fastened by means 18 to support 16. By the construction which I have adapted, I am enabled to make my regulator in a convenient form, and by properly proportion'ing the parts the regulator may be arranged to be of such a height as to give the maximum convenience in using the switching device.

While I have shown my invention as emcompensator, reactive means, a translating.

device connected to the compensator through the reactive means, and a single means for connecting the compensator in circuit with the source and for short-circuiting the reactive means.

2. In combination, a "source of energy, a switch, a compensator having a winding connected to the source and to theswitch, the

switch completing the circuit through the compensator, reactive means, a translating device connected through the reactive means to the winding, and means in operative relation to the switch for shott-circuiting the reactive means.

3. In combination, a source of energy, a compensator having a winding comprising a plurality of parts connected to the source, a switch connecting the parts together, reactive means, a translating device connected through the reactive means to the winding, and contacts in operative relation to the switch short-circuiting the reactive means when the switch is closed.

4. In combination, a-so'urce of energy, a compensator having two windings, one terminal of each being connected to the source, a switch connecting together the other terminals of the winding, reactive means, a translating device connected to one of the windings through the means, and conductors in operative relation with the switch shortcircuiting the reactive means when the switch is closed.

5. In combination, a source of energy,-a

compensator having a plurality of windings,

6. In combination, a source of energy, a compensator having t-wo'windings, one terminal of each connected to the source, a switching device comprising a conducting blade pivoted at one end to a conducting member and inoperative relation to a plurality of contacts arranged so that upon movement of the blade successive contacts are connected through the blade to the memher. and each other, conductors connecting the free terminals of the windings to the member and the contact first connected by the blade to the member, reactive means connected to this contact, conductors connected to the reactive means and the successive'contacts of the switching deviceso that the reactive means are successively short-circuited by the movementof the blade.

7. In combination, a source of energy, a compensator having separate windings and having a magnetic shunt adapted to divert a portion of the magnetic flux set up by one winding from passing through the other, re-

active means, a translating device connected rounding the core,'reactive coils connected to one of the windings, a switch, a member supporting the switch and the coils, and fastening them to the core, and connections between the windings, the switch and the reactive coils arranged so that the switch in its movement connects the windings and short-circuits the reactive coils.

9. A regulating device comprising a magnetic core, windings surrounding the core, a magnetic shunt adapted to divert a portion of the magnetic flux set up by one winding from passing through the other, a support for the core, a switch comprising a conducting blade pivoted at one end to a conducting member in operative relation at its other end with contacts adapted to be connected through the blade with the member and each other, a support for the switch holding the same to the core, reactive coils fastened to the support, and connections between the windings, the reactive coils and switch arranged so that the blade in its movement connects the windings and shortcircuits the reactive coils.

In witness whereof, I have hereunto set my hand this 6th day of April, 1909.

EDWARD A. WAGNER.

Witnesses JAMES J. W001), A. F. WnLoH. 

